/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package hivemall.utils.concurrent;

import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public final class ExecutorFactory {

    private ExecutorFactory() {}

    public static ThreadPoolExecutor newFixedThreadPool(int nThreads, String threadName,
            boolean daemon) {
        return new ThreadPoolExecutor(nThreads, nThreads, 0L, TimeUnit.MILLISECONDS,
            new LinkedBlockingQueue<Runnable>(), new NamedThreadFactory(threadName, daemon));
    }

    public static Executor newDirectExecutor() {
        return new DirectExecutor();
    }

    static final class DirectExecutor implements Executor {

        DirectExecutor() {}

        @Override
        public void execute(Runnable command) {
            command.run();
        }

    }
}
